The mass of an iron(II) sulfate crystal is 8.36 g. How many moles of FeSO4 are in the crystal?

The number of moles present in the FeSO4 are 0.055 mol.

Explanation:

                 Number of moles = mass in grams / molecular mass

Given,

    mass = 8.36 g,

    molecular mass of FeSO4 = 151.908 g / mol

         number of moles = 8.36 / 151.908

                                       = 0.055 mol.

answer; capital earns interest; entrepreneurship receives a profit or incurs a loss;